/* ============================================================
   NURUFEED STORE - animations.css
   Lightweight motion system: reveal on scroll, hover lift,
   ripple, dropdowns, back-to-top. No libraries.
   Respects prefers-reduced-motion.
   ============================================================ */

html { scroll-behavior: smooth; }

/* ---------- Header: shadow grows on scroll ---------- */
.site-header { transition: box-shadow .3s ease, background-color .3s ease; }
.site-header.scrolled { box-shadow: 0 6px 24px rgba(15, 40, 60, .12); }
.main-nav a { position: relative; transition: color .2s ease; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  background: var(--brand); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.main-nav a.active::after, .main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active, .main-nav a:hover { border-bottom-color: transparent; }

/* ---------- Buttons: lift + press + ripple ---------- */
.btn { transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease; position: relative; overflow: hidden; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.97); }
.btn-primary:hover { box-shadow: 0 8px 20px rgba(255, 152, 0, .35); }
.nf-ripple {
  position: absolute; border-radius: 50%; pointer-events: none;
  background: rgba(255, 255, 255, .55); transform: scale(0);
  animation: nfRipple .6s ease-out forwards;
}
.btn-ghost .nf-ripple, .btn-outline .nf-ripple { background: rgba(255, 152, 0, .25); }
@keyframes nfRipple { to { transform: scale(2.6); opacity: 0; } }

/* ---------- Cards: lift + image zoom ---------- */
.product-card, .shop-card, .cat-card, .banner-card, .stat-card, .chart-card {
  will-change: transform;
  transition: transform .25s cubic-bezier(.16, 1, .3, 1), box-shadow .25s ease, border-color .2s ease;
}
.product-card:hover, .shop-card:hover, .cat-card:hover { transform: translateY(-6px); }
.banner-card:hover { transform: translateY(-4px) scale(1.01); }
.product-thumb img, .cat-card-img img, .shop-card-logo img, .banner-card img {
  transition: transform .5s cubic-bezier(.16, 1, .3, 1);
}
.product-card:hover .product-thumb img { transform: scale(1.08); }
.cat-card:hover .cat-card-img img, .shop-card:hover .shop-card-logo img { transform: scale(1.1); }
.cat-pill { transition: transform .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease; }
.cat-pill:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(255, 152, 0, .18); }
.footer-social a, .lang-switch, .cart-link { transition: transform .2s ease, background-color .2s ease, color .2s ease; }
.footer-social a:hover { transform: translateY(-2px); }
.cart-link:hover { transform: scale(1.08); }

/* ---------- Cart bump when item added ---------- */
@keyframes cartPop {
  0% { transform: scale(1); } 30% { transform: scale(1.35) rotate(-8deg); }
  60% { transform: scale(.92); } 100% { transform: scale(1); }
}
.cart-bump { animation: cartPop .5s ease; }

/* ---------- Scroll reveal (JS adds .in) ---------- */
/* Hidden state only applies when JS is active, so no-JS never hides content */
.js-anim [data-reveal] {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.16, 1, .3, 1);
  transition-delay: var(--d, 0ms);
}
.js-anim [data-reveal="left"] { transform: translateX(-30px); }
.js-anim [data-reveal="right"] { transform: translateX(30px); }
.js-anim [data-reveal="scale"] { transform: scale(.94); }
.js-anim [data-reveal="fade"] { transform: none; }
.js-anim [data-reveal].in { opacity: 1; transform: none; }

/* ---------- Hero entrance on page load ---------- */
@keyframes heroUp { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
.hero .container > * { animation: heroUp .8s cubic-bezier(.16, 1, .3, 1) both; }
.hero .container > *:nth-child(2) { animation-delay: .08s; }
.hero .container > *:nth-child(3) { animation-delay: .16s; }
.hero .container > *:nth-child(4) { animation-delay: .24s; }
.hero .container > *:nth-child(5) { animation-delay: .32s; }
@keyframes heroGlow {
  0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; }
}

/* ---------- Dropdown / suggest / modal pop ---------- */
@keyframes dropIn { from { opacity: 0; transform: translateY(-8px) scale(.98); } to { opacity: 1; transform: none; } }
.search-suggest:not([hidden]) { animation: dropIn .18s ease; transform-origin: top center; }
.modal-box, .nf-confirm-box { animation: dropIn .25s cubic-bezier(.16, 1, .3, 1); }
.nf-toast { transition: opacity .25s ease, transform .25s cubic-bezier(.16, 1, .3, 1); }

/* ---------- Subtle float for hero badge ---------- */
@keyframes nfFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.hero-badge { animation: nfFloat 5s ease-in-out infinite; }

/* ---------- Back to top ---------- */
#nf-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 2990;
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line);
  background: #fff; color: var(--brand-dark); font-size: 20px; font-weight: 800;
  cursor: pointer; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(14px); pointer-events: none;
  transition: opacity .25s ease, transform .25s cubic-bezier(.16, 1, .3, 1), background-color .2s ease;
}
#nf-top.show { opacity: 1; transform: none; pointer-events: auto; }
#nf-top:hover { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- Card tilt (JS sets --rx/--ry) ---------- */
.tilt { transform: perspective(700px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-4px) !important; }

/* ---------- Reduced motion: kill everything ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .js-anim [data-reveal] { opacity: 1; transform: none; }
  .hero .container > * { animation: none; }
  .hero-badge { animation: none; }
}